This is my latest layout-Teignford-and shows the progress made so far and the start of the scenic additions.
I am a firm believer in using the most cost effective materials available to me. Our local art shop has a box of offcuts. These comprise the best quality art mounting board-Daler. They are the the bits that are surplus to framing.
The material is very stable- Hennock is over six years old and uses this material for it's buildings and scenery foundations.
It is all part of the fun of Railway Modelling to find useful materials and need not involve too much Chequebook or Credit Card use.
For more details of Teignford see-http://3mmscalestocklist.blogspot.com